UFOs is nothing but scientific theory. Science have been unable to proove any possible form outside of earth. Apparently, for there to be a creature out in space, that creature must have oxygen. Oxygen is only in earth, not anywhere else. Until they are able to prove that UFOs exist, there is no point in thinking that they are stronger than humans. UFOs, and the creatures that ride them, (if it were true) would not have a concious, like that of an animal. UFOs are superstition.
Its really a big question - ???????????
UFO may ther.. but we couldnt get any real proof about that..only with the proper recognized proof we can decide whether it is living or not...